2-メチル-2-ヘプテン-6-オン 化学特性,用途語,生産方法
外観
無色～わずかにうすい黄色, 澄明の液体
溶解性
水に不溶, 各種有機溶剤に可溶。水にほとんど溶けない。
用途
医薬品の合成中間体。
用途
ビタミン、香料、医薬品等ファインケミカルの中間原料。食品、化粧品等の芳香剤添加成分
説明
6-Methyl-5-hepten-2-one has a strong, fatty, green, citrus-like
odor, and a bittersweet taste reminiscent of pear. May be prepared
from oil of lemongrass or from citral by refluxing for 12 hours in
aqueous solution containing K2C 03, and subsequent distillation
and vacuum fractionation; from acetoacetic ester and methylbuten-3-ol-2 with aluminum alcoholate in Carroll’s reaction followed by pyrolysis of the ester.
化学的特性
6-Methyl-5-hepten-2-one is an important intermediate in the synthesis of terpenoids.
Its odor properties are not impressive. It occurs in nature as a degradation
product of terpenes. (Z)- and (E)-Tagetone, [3588-18-9], [6752-80-3], are major
components of tagetes oil. Solanone [1937-54-8] and pseudoionone
[141-10-6] are acyclicC13 ketoneswith a terpenoid skeleton. Solanone is one of the
flavor-determining constituents of tobacco, and pseudoionone is an intermediate
in the synthesis of ionones.
天然物の起源
Originally identified in lemongrass; it has been reported found in the essential oils of palmarosa, lemon, citronella, vervain, geranium, Ocimum canum, Artemisia scoparia, Urtica dioica and others. Also reported found in apple, apricot, sweet
and sour cherry, orange juice, citrus peel oils, bilberry, lingonberry, cranberry, guava, grapes, melon, peach, pear, raspberry, strawberry, blackberry, carrot, celery, tomato, potato, clove bud and leaf, ginger, peppermint oil, thymus, Gruyere cheese, butter, beef, hop
oil, beer, cognac, cider, white wine, cocoa, tea, peanut oil, avocado, Arctic bramble, cloudberry, olive, passion fruit, plumcot, rose
apple, marjoram, starfruit, mango, fig, rice, rice bran, quince, origanum, calamus, buckwheat, corn oil, wort, dried bonito, elderberry,
cherimoya, kiwifruit, mountain papaya, endive, lemon balm, clary sage, nectarine, clam, Cape gooseberry, maté, German chamomile
oil and mastic gum leaf oil, lime oil and apple brandy
使用
Organic synthesis, inexpensive perfumes, fla-voring.
製造方法
From oil of lemongrass or from citral by refluxing for 12 hours in aqueous solution containing K2CO3, and subsequent
distillation and vacuum fractionation; from acetoacetic ester and methyl-buten-3-ol-2 with aluminum alcoholate in Carroll’s reaction
followed by pyrolysis of the ester
定義
ChEBI: A heptenone that is hept-5-en-2-one substituted by a methyl group at position 6. It is a volatile oil component of citronella oil, lemon-grass oil and palmarosa oil.
一般的な説明
6-Methyl-5-hepten-2-one is one of the main flavor volatile of tomatoes.
安全性プロファイル
Moderately toxic by
ingestion. A skin irritant. Flammable liquid
when exposed to heat, sparks, or flame.
When heated to decomposition it emits
acrid smoke and irritating fumes.
2-メチル-2-ヘプテン-6-オン 上流と下流の製品情報
原材料
準備製品